(HealthDay News) — For obese adolescents, sleep duration independently predicts cardiometabolic risk, according to a study published online March 6 in The Journal of Pediatrics.
Heidi B. IglayReger, PhD, from the University of Michigan in Ann Arbor, and colleagues examined the contributions of sleep duration and fragmentation on cardiometabolic risk accumulation in a cohort of 37 obese adolescents aged 11–17 years. A continuous cardiometabolic risk score (cMetScore) was created and adjusted for age, sex, and race. For seven days, sleep and physical activity were objectively measured in habitual, free-living conditions.
The researchers identified correlations for body mass index, total sleep time, and sleep session length with cMetScore (all P<0.05). An inverse and independent association was noted for total sleep time with cMetScore (P=0.001); total sleep time was the best independent predictor of metabolic risk.
“Sleep duration inversely predicts cardiometabolic risk in obese adolescents, even when we controlled for various measures of physical activity, anthropometry, and adiposity,” the authors write. “Further research should investigate the biological mechanism of this relationship and the potential treatment effect of sleep intervention in decreasing cardiometabolic risk in this population.”